A regional framework for calculating nitrous oxide emissions from intensive agricultural land was developed by integration of the DNDC model (version 8.3P) with regional data on soil and climate, land use and farm practices for Belgium (Beheydt, 2006). The regional predictions of nitrous oxide emissions were based on regression equations developed separately for cropland and grassland that scaled the DNDC model outputs. The regression equations corrected for the differences between simulated and measured emissions at 22 long-term field monitoring sites in Belgium (Beheydt et al., 2007). To represent uncertainty in model inputs, the framework calculated emissions with high and low estimates of soil carbon content. Simulations with the modified DNDC framework gave results that were comparable to the IPCC methodology.